23/01/2022
Massive 180-million-year-old ‘sea dragon’ fossil unearthed in England
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Massive 180-million-year-old ‘sea dragon’ fossil unearthed in England
The Most Important Discoveries in Paleontology - Part 4
Paleontology is an ever-evolving science, and new discoveries are often brought to our light. The 19th Century brought many fascinating animals to our attention
The Most Important Discoveries in Paleontology - Part 3
Paleontology is an ever-evolving science, and new discoveries are often brought to our light. The 19th Century brought many fascinating animals to our attention
The Most Important Discoveries in Paleontology - Part 2
Paleontology is an ever-evolving science, and new discoveries are often brought to our light. The 19th Century brought many fascinating animals to our attention
The Most Important Discoveries in Paleontology - Part 1
Paleontology is an ever-evolving science, and new discoveries are often brought to our light. The 19th Century brought many fascinating animals to our attention
Most beautiful megalodon teeth in the world
Fossil plant remains
Paleobotany is the branch of palaeontology or palaeontology that deals with the recovery and identification of plant remains from geological contexts, their use of biology in order to reconstruct past environments (paleontology), and both the evolutionary history of plants, while influencing the evolution of life significantly. general
A new discovery of four new species of ancient insects has raised new questions rather than helping to solve some mysteries.
Fossil discoveries often help answer age-old questions about how our modern world came to be. However, sometimes they can deepen or only complicate the mystery, as the recent discovery of four new species of ancient insects in British Columbia and Washington state proves.
The fossil species, recently discovered by paleontologist Bruce Archibald of Simon Fraser University and Vladimir Makarkin of the Russian Academy of Sciences, is a group of insects known as "snake flies", which have now been proven to have lived in the area about 50 million years ago.
The findings, published in the journal Zootaxa, raise more questions about the insects' clearly extended evolutionary history and why they survive today.
Snake flies are slender predatory insects native to the northern hemisphere, notably absent from the tropics.
Scientists traditionally believe that they require cold winters to stimulate growth in adults, and are restricted to areas with winter frosts or colder days, however, fossil sites where ancient species were found experienced a climate that does not fit this interpretation.
According to Archibald, paleontologists have found two families of snake flies in fossil sites characterized by hot climates, while it was previously thought that these two families of snake flies needed cold winters to survive.
"We now know that earlier in its evolutionary history, the snake fly lived in climates with very mild winters, so the question becomes: Why hasn't it maintained its ability to live in such tropics? And why are there no snake flies in the tropics?" today?".
Le dilophosaure ou Dilophosaurus (« lézard à deux crêtes » en grec) est un genre éteint de grands dinosaures théropodes carnivores, découvert en Chine et en Arizona où il vivait au Jurassique inférieur, il y a environ entre 199 et 183 Ma (millions d'années), au cours des étages Sinémurien et Pliensbachien.
Les premiers spécimens furent décrits en 1954, mais ce n'est que plus d'une décennie plus t**d que leur genre reçut leur nom actuel. Le dilophosaure est l'un des plus anciens théropodes connus, mais également l'un des moins bien compris. Le dilophosaure est apparu à plusieurs reprises dans la culture populaire, notamment dans le film Jurassic Park, de Steven Spielberg, en 1993.
Il mesurait moins de 2 mètres de haut, 6 mètres de long et pesait 500 kilos. Son crâne possédait des articulations qui lui permettaient de plisser le nez et une paire de crêtes osseuses sur la tête (d’où son nom). Les crêtes du dilophosaure, pouvaient peut-être servir d’accessoires visuels de parade1,2. Des études menées par Robert Gay tendent à montrer que ces crêtes étaient plus grandes chez un sexe que chez l'autre3.
C'est l'un des plus anciens grands dinosaures prédateurs. Sa gu**le était particulièrement étroite et souple, ses dents pourtant ne semblent pas avoir été faites pour chasser de grandes proies : étroites et pointues4 elles se seraient tout de suite brisées5, à ce que pensent certains chercheurs, à vouloir mordre dans un os, mais on ne peut plus soutenir la théorie qui faisait de lui un charognard. Il est très vraisemblable qu'il tuait sa victime à l'aide des griffes qu'il portait aux pattes avant et arrière. Une telle morphologie « passe partout » permettait au dilophosaure de chasser autant des proies imposantes comme Plateosaurus que des proies beaucoup plus petites comme des petits mammifères et des lézards qu’il allait chercher dans les broussailles ou les crevasses des rochers.
Spinosaurus est un genre de dinosaures théropodes appartenant à la famille éteinte des Spinosauridae et ayant vécu à l'Albien (partie supérieure du Crétacé inférieur, il y a environ 100 millions d'années) et au Cénomanien (base du Crétacé supérieur, il y a environ 97 millions d'années), dans ce qui est actuellement l'Afrique du Norda. Les connaissances sur ce dinosaure reposèrent pendant plus d'un siècle sur des ossements crâniens et post-crâniens décrits au début du xxe siècle par le paléontologue allemand Ernst Stromer et associés à l'espèce Spinosaurus ægyptiacus. Ces ossements furent détruits durant la Seconde Guerre mondiale, en 1944, lors d'un bombardement aérien de la ville de Munich. De nouveaux restes associés découverts en 2014 et appartenant à un seul et même individu de Spinosaurus aegyptiacus ont toutefois apporté des informations nouvelles sur l'anatomie et le mode de vie de ce dinosaure qui semble avoir été quadrupède et semi-aquatique. Une seconde espèce de Spinosaurus, S. maroccanus a été nommée sur base de vertèbres cervicales et dorsales et d'éléments crâniens provenant du Maroc mais la majorité des paléontologues la considèrent comme non valide.
Spinosaurus est un animal au museau long et étroit portant une rangée sigmoïde de dents coniques. Les scientifiques s'accordent à dire que les Spinosauridae comme Spinosaurus, qui possèdent un crâne crocodiliforme, furent des animaux au moins partiellement piscivores, capable de se nourrir également d'autres proies comme de jeunes dinosaures et des ptérosaures. Spinosaurus se distingue des autres spinosauridés par la présence d'une crête nasale élevée au-dessus des yeux, des narines externes proches de l'orbite ainsi qu'une hypertrophie des épines neurales des vertèbres dorsales. Selon Stromer, ces processus épineux, qui pouvaient atteindre plus de 160 centimètres de hauteur, sous-tendaient une voile de peau. Cependant, certains scientifiques estiment que les épines neurales auraient été plutôt le support d'une bosse de muscle, à la manière des bisons actuels. Un museau de Spinosaurus décrit dans les années 2000 démontre la grande taille que pouvait atteindre ce dinosaure, avec une reconstitution du crâne basé sur celui d'Irritator et un corps reconstruit à partir de Baryonyx 2. Si les plus grandes estimations se révélaient exactes, il s'agirait là du plus grand théropode connu, mais également du plus grand carnivore terrestre que la Terre ait porté
^Ankylosaurus^, the ankylosaurs in French, literally "rigid lizard", is an extinct genus of herbivorous ornithischian dinosaurs of the Ankylosauria infraorder and of the Ankylosauridae family.
Ankylosaurus fossils have been discovered in North America in sediments from the late Late Cretaceous (Maastrichtian), approximately between 72.1 to 66.0 million years ago. A large number of fossils have also been found in eastern Hungary, footprints in Bolivia2. It is one of the dinosaurs that became extinct during the Great Extinction of the Late Cretaceous, which occurred around 66 Ma (millions of years ago).
Only one species is attached to the genus: Ankylosaurus magniventris, described by Barnum Brown in 19081.
Although no complete skeletons have been found and several more have more fossilized species, Ankylosaurus is often considered the archetype of the armored dinosaur (thyrophores). He gave his name to the family and the infra-order to which it belongs, respectively the ankylosaurids and the ankylosaurians. Other ankylosaurids shared its characteristics, including a mace-like tail, but Ankylosaurus was the largest member of its family.
Scientists from Morocco and the United States have discovered three new species of flying dinosaurs known as "pterosaurs", which lived in the Moroccan desert 100 million years ago.
Professor David Martell, a paleontologist from the University of Portsmouth, made this discovery with a team of researchers on the Moroccan "Kumkom" plateau.
The study, published in the Journal of Cretaceous Research, revealed that these pterosaurs appeared in the middle Cretaceous period, and they had wings that ranged between three and four meters, and they were filled with long and sharp teeth.
"The new findings show that African pterosaurs were quite similar to those found on other continents," a university spokeswoman said.
"These flying predators soared over a world dominated by predators, including crocodiles and carnivorous dinosaurs," she added.
💯💯💯 Giant dinosaur... "Australutean" discovered in Australia.
The dinosaur "Australotitan" ranged between 25 to 30 meters in length, 5 to 6.5 meters in height, and weighed the equivalent of 1,400 red kangaroos.
Australian scientists have discovered a huge sauropod dinosaur called the "southern giant", the size of a basketball court that roamed Australia 96 million years ago.
The discovered dinosaur "Australotitan" was huge and long-necked, ranging in length from 25 to 30 meters, and between 5 to 6.5 meters in height, and weighed the equivalent of 1,400 red kangaroos. It is a member of the titanosaur family that lived about 100 million years ago. "Based on comparisons of the size of preserved limbs, this new titanosaur is estimated to be one of the 5 largest dinosaurs in the world," said Robin Mackenzie, director of the Iromanga Museum of Natural History.💯💯💯
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Massive 180-million-year-old ‘sea dragon’ fossil unearthed in England #fossils #fossil #paleontology #geology #dinosaurs #dinosaur #nature #science #prehistoric #fossilhunting #jurassicpark #jurassic #minerals #fossilhunter #jurassicworld #ammonite #rocks #fossiladdict #art #palaeontology #crystals #paleontologist #ammonites #naturalhistory #paleoart #geologyrocks #megalodon #trilobite #shark #bhfyp
The Most Important Discoveries in Paleontology - Part 4 Paleontology is an ever-evolving science, and new discoveries are often brought to our light. The 19th Century brought many fascinating animals to our attention #fossils #fossil #paleontology #geology #dinosaurs #dinosaur #nature #science #prehistoric #fossilhunting #jurassicpark #jurassic #minerals #fossilhunter #jurassicworld #ammonite #rocks #fossiladdict #art #palaeontology #crystals #paleontologist #ammonites #naturalhistory #paleoart #geologyrocks #megalodon #trilobite #shark #bhfyp
The Most Important Discoveries in Paleontology - Part 3 Paleontology is an ever-evolving science, and new discoveries are often brought to our light. The 19th Century brought many fascinating animals to our attention #fossils #fossil #paleontology #geology #dinosaurs #dinosaur #nature #science #prehistoric #fossilhunting #jurassicpark #jurassic #minerals #fossilhunter #jurassicworld #ammonite #rocks #fossiladdict #art #palaeontology #crystals #paleontologist #ammonites #naturalhistory #paleoart #geologyrocks #megalodon #trilobite #shark #bhfyp
The Most Important Discoveries in Paleontology - Part 2 Paleontology is an ever-evolving science, and new discoveries are often brought to our light. The 19th Century brought many fascinating animals to our attention
The Most Important Discoveries in Paleontology - Part 1 Paleontology is an ever-evolving science, and new discoveries are often brought to our light. The 19th Century brought many fascinating animals to our attention
Most beautiful megalodon teeth in the world #fossils #fossil #paleontology #geology #dinosaurs #dinosaur #nature #science #prehistoric #fossilhunting #jurassicpark #jurassic #minerals #fossilhunter #jurassicworld #ammonite #rocks #fossiladdict #art #palaeontology #crystals #paleontologist #ammonites #naturalhistory #paleoart #geologyrocks #megalodon #trilobite #shark #bhfyp
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